Method Of Preparation:
1. Soak aval in water for 3 to 4 minutes ,drain it, squeeze water from it and keep aside.
2. In a wok, add 2 tbsp of oil,Sputter the mustards,dry red chilly, urdal.
3. Add onion to this and mix till onion becomes translucent. Then add ginger ,curry leaves and green chillies. After a second add turmeric powder,salt and chilly powder and mix well. Wait for few seconds and add aval to it. Mix well for 2 minutes and then put off the gas.
4. Add lime juice to it.Mix well.
5. Serve hot.

Tips:
1. I used Matta aval,so had to soak for 3 min. You can use the ordinary Aval too. Soak it for about a minute/you just need to wash it and then squeeze it immediately.
2. Bengal gram can be omitted.
3. Do not add lime juice while it is still on fire,it turns bitter